Related Rule
Dominican Republic
Practice Relating to Rule 72. Poison and Poisoned Weapons
The Dominican Republic’s Military Manual (1980) prohibits the use of poison and poisonous weapons. It tells soldiers:
You may not use poison or poisoning agents such as dead animals, bodies, or defecation to poison any water and food. Of course, you may use non-poisonous methods to destroy military food and water supplies in order to deprive the enemy combatants of their use. 
Dominican Republic, La Conducta en Combate según las Leyes de la Guerra, Escuela Superior de las FF. AA. “General de Brigada Pablo Duarte”, Secretaría de Estado de las Fuerzas Armadas, May 1980, p. 5.